CN111645370A - Fiber fully-wound hydrogen storage bottle plastic inner container and forming method thereof - Google Patents

Fiber fully-wound hydrogen storage bottle plastic inner container and forming method thereof Download PDF

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Publication number
CN111645370A
CN111645370A CN202010453630.XA CN202010453630A CN111645370A CN 111645370 A CN111645370 A CN 111645370A CN 202010453630 A CN202010453630 A CN 202010453630A CN 111645370 A CN111645370 A CN 111645370A
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master batch
hydrogen storage
polyamide
outer layer
storage bottle
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CN111645370B (en
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华林
刘兆义
王辉
陈一哲
付爽
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Zhejiang Lanneng Hydrogen Technology Co ltd
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Wuhan University of Technology WUT
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/21—Anti-static
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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Abstract

A fiber fully-wound hydrogen storage bottle plastic liner and a forming method thereof relate to the field of hydrogen storage equipment materials. The fiber fully-wound hydrogen storage bottle plastic inner container comprises an inner layer, a middle layer and an outer layer; the inner layer consists of 80-90% of polyamide-6 and 10-20% of inner layer master batch in percentage by mass; the inner layer master batch consists of 88-94% of polyamide-6, a blocking agent, an antistatic agent, an antioxidant and a dispersing agent; the middle layer is made of ethylene-vinyl alcohol copolymer; the outer layer consists of 80-90% of polyamide-6 and 10-20% of outer layer master batch: the outer layer master batch consists of 79-89.5% of polyamide-6, a blocking agent, an antistatic agent, an antioxidant, a dispersing agent, a light stabilizer and a coupling agent. The fiber fully-wound hydrogen storage bottle plastic liner and the forming method thereof have the advantages of good anti-permeability performance, high stability, high air tightness and high oxidation resistance.

Description

Fiber fully-wound hydrogen storage bottle plastic inner container and forming method thereof
Technical Field
The application relates to the field of hydrogen storage equipment materials, in particular to a fiber fully-wound hydrogen storage bottle plastic inner container and a forming method thereof.
Background
The automobile industry is facing to energy structure optimization to meet the challenge of climate change, fuel cell automobiles as one of new energy vehicles undertake important missions, and safe, reliable and practical vehicle-mounted hydrogen storage technology is very important for marketization of hydrogen fuel cell automobiles.
The aluminum alloy used as the inner container material of the traditional hydrogen storage bottle cannot meet the technical development requirements of long endurance mileage and the like due to the defects of low hydrogen storage density, hydrogen brittleness and the like. Therefore, PA6 material with higher hydrogen storage density and lower cost is applied. Compared with aluminum alloy materials, the PA6 material has good comprehensive strength, stronger corrosion resistance and lower cost. However, the single layer PA6 has poor permeation resistance and cannot have high hydrogen gas barrier property, and needs to be subjected to composite modification.
Disclosure of Invention
The application aims to provide a fiber fully-wound hydrogen storage bottle plastic liner and a forming method thereof, and the liner has the advantages of good anti-permeability performance, and strong stability, air tightness and oxidation resistance.
The embodiment of the application is realized as follows:
the embodiment of the application provides a fiber fully-wound hydrogen storage bottle plastic liner, which comprises an inner layer, a middle layer and an outer layer which are sequentially arranged from inside to outside;
wherein the inner layer consists of 80-90% of polyamide-6 and 10-20% of inner layer master batch in percentage by mass; the inner layer master batch is prepared from the following raw materials in percentage by mass: 88-94% of polyamide-6, 2.5-5% of a blocking agent, 1.5-3% of an antistatic agent, 0.5-1% of an antioxidant and 1.5-3% of a dispersant;
the middle layer is made of ethylene-vinyl alcohol copolymer;
the outer layer consists of 80-90% of polyamide-6 and 10-20% of outer layer master batch in percentage by mass; the outer layer master batch is prepared from the following raw materials in percentage by mass: 79-89.5% of polyamide-6, 2.5-5% of blocking agent, 1.5-3% of antistatic agent, 0.5-1% of antioxidant, 1.5-3% of dispersing agent, 1.5-3% of light stabilizer and 3-6% of coupling agent.
In some alternative embodiments, the barrier agent is a modified hydrotalcite.
In some alternative embodiments, the antistatic agent is a complex of an oxirane amine adduct.
In some alternative embodiments, the antioxidant is a mixture of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and a phosphite.
In some alternative embodiments, the dispersant is a polyamide wax.
In some alternative embodiments, the light stabilizer is N, N-bis (2, 2, 6, 6-tetramethyl-4-piperidinyl) -1, 3-benzenedicarboxamide.
In some alternative embodiments, the coupling agent is a maleic anhydride-based polymeric coupling agent.
The embodiment of the application also provides a forming method of the fiber fully-wound hydrogen storage bottle plastic liner, which comprises the following steps:
respectively adding the raw materials of the inner layer master batch and the raw materials of the outer layer master batch into an internal mixer for mixing according to the mass percentage, and conveying the mixture to a double-screw granulation device to respectively prepare the inner layer master batch and the outer layer master batch;
according to the mass percentage, the inner layer master batch, the corresponding polyamide-6, the ethylene-vinyl alcohol copolymer, the outer layer master batch and the corresponding polyamide-6 are respectively added into a mixer for mixing, and an inner layer hopper, a middle layer hopper and an outer layer hopper corresponding to the structure of a co-extruder unit are fused and plasticized in a machine head, then are compounded and extruded to form a multi-layer concentric composite parison, and then are blown to form a hollow plastic inner container structure.
In some optional embodiments, the mixing time in the mixer is 10 to 20 min.
In some optional embodiments, when the hollow plastic liner structure is formed by blowing, the blowing ratio is 2.5-6, the layer ratio is 3: 5: 5.
the beneficial effect of this application is: the plastic liner of the fiber fully-wound hydrogen storage bottle provided by the embodiment comprises an inner layer, a middle layer and an outer layer which are sequentially arranged from inside to outside; the inner layer consists of 80-90% of polyamide-6 and 10-20% of inner layer master batch in percentage by mass; the inner layer master batch is prepared from the following raw materials in percentage by mass: 88-94% of polyamide-6, 2.5-5% of a blocking agent, 1.5-3% of an antistatic agent, 0.5-1% of an antioxidant and 1.5-3% of a dispersant; the middle layer is made of ethylene-vinyl alcohol copolymer; the outer layer consists of 80-90% of polyamide-6 and 10-20% of outer layer master batch in percentage by mass; the outer layer master batch is prepared from the following raw materials in percentage by mass: 79-89.5% of polyamide-6, 2.5-5% of blocking agent, 1.5-3% of antistatic agent, 0.5-1% of antioxidant, 1.5-3% of dispersing agent, 1.5-3% of light stabilizer and 3-6% of coupling agent. The polyamide-6 is modified and then respectively used as an inner layer and an outer layer to prepare the plastic liner of the hydrogen storage bottle, wherein the inner layer is mainly used for determining the dimensional stability of a product and has the functions of enhancing hydrogen barrier property, antistatic property and aging resistance; the middle layer adopts ethylene-vinyl alcohol copolymer to play a role in high permeation resistance of a multilayer co-extrusion structure, so that hydrogen can be prevented from permeating into the hydrogen storage bottle, and external gas and the like can be prevented from permeating into the hydrogen storage bottle; the outer layer plays the effect of reinforcing hydrogen barrier property, antistatic properties, ageing resistance, improves the light stability and the surface adhesion nature of goods simultaneously. The application also provides a forming method of the plastic inner container of the fiber fully-wound hydrogen storage bottle, and the method has the advantages of simple operation, convenience in use and suitability for large-scale preparation.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The embodiment of the application provides a fiber fully-wound hydrogen storage bottle plastic liner, which comprises an inner layer, a middle layer and an outer layer which are sequentially arranged from inside to outside; wherein the inner layer consists of 80-90% of polyamide-6 and 10-20% of inner layer master batch in percentage by mass; the inner layer master batch is prepared from the following raw materials in percentage by mass: 88-94% of polyamide-6, 2.5-5% of a blocking agent, 1.5-3% of an antistatic agent, 0.5-1% of an antioxidant and 1.5-3% of a dispersant; the middle layer is made of ethylene-vinyl alcohol copolymer; the outer layer consists of 80-90% of polyamide-6 and 10-20% of outer layer master batch in percentage by mass; the outer layer master batch is prepared from the following raw materials in percentage by mass: 79-89.5% of polyamide-6, 2.5-5% of blocking agent, 1.5-3% of antistatic agent, 0.5-1% of antioxidant, 1.5-3% of dispersing agent, 1.5-3% of light stabilizer and 3-6% of coupling agent. Optionally, the blocking agent is modified hydrotalcite. Optionally, the antistatic agent is a compound of an oxirane amine adduct. Optionally, the antioxidant is a mixture of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and a phosphite ester. Optionally, the dispersant is a polyamide wax. Optionally, the light stabilizer is N, N-bis (2, 2, 6, 6-tetramethyl-4-piperidyl) -1, 3-benzenedicarboxamide. Optionally, the coupling agent is a maleic anhydride polymer coupling agent.
The embodiment of the application also provides a forming method of the fiber fully-wound hydrogen storage bottle plastic liner, which comprises the following steps:
respectively adding the raw materials of the inner layer master batch and the raw materials of the outer layer master batch into an internal mixer for mixing according to the mass percentage, and conveying the mixture to a double-screw granulation device to respectively prepare the inner layer master batch and the outer layer master batch;
according to the mass percentage, the inner layer master batch, the corresponding polyamide-6, the ethylene-vinyl alcohol copolymer, the outer layer master batch and the corresponding polyamide-6 are respectively added into a mixer for mixing, and an inner layer hopper, a middle layer hopper and an outer layer hopper corresponding to the structure of a co-extruder unit are fused and plasticized in a machine head, then are compounded and extruded to form a multi-layer concentric composite parison, and then are blown to form a hollow plastic inner container structure. Optionally, the mixing time in the mixer is 10-20 min. Optionally, when the inflation forms hollow plastics inner bag structure, the inflation ratio is 2.5 ~ 6, and the layer ratio is 3: 5: 5.
the plastic liner of the fully-wound fiber hydrogen storage bottle provided by the embodiment is composed of an inner layer, an intermediate layer and an outer layer which are sequentially arranged from inside to outside, the inner layer is prepared by mixing inner layer master batch prepared from a blocking agent, an antistatic agent, an antioxidant and a dispersing agent with polyamide-6, the size stability of the product can be determined, and the effects of enhancing hydrogen blocking property, antistatic property and aging resistance are simultaneously achieved, the intermediate layer adopts an ethylene-vinyl alcohol copolymer to form a multi-layer co-extrusion structure with high permeation resistance, so that hydrogen can be prevented from permeating out of the hydrogen storage bottle, and external gas and the like can be prevented from permeating into the hydrogen storage bottle; the outer layer is prepared by mixing the outer layer master batch prepared from polyamide-6, a blocking agent, an antistatic agent, an antioxidant, a dispersing agent, a light stabilizer and a coupling agent with the polyamide-6, so that the effects of enhancing hydrogen blocking property, antistatic property and aging resistance can be achieved, and meanwhile, the light stability and surface adhesion of the product are improved; the polyamide wax is selected as a dispersing agent in the system, so that various auxiliary agents in the composite material system can be uniformly dispersed in the polyamide-6 resin, and the composite material can obtain balanced performance; the modified polyamide-6 material has excellent size stability, high air tightness, high antistatic property and high antioxidant performance after being formed, and the polyamide-6 composite material has good processing performance and low material cost, is used for producing the plastic liner of the hydrogen storage bottle, and has good market application prospect.
The forming method of the fiber fully-wound hydrogen storage bottle plastic liner provided by this embodiment is to add the raw materials of the inner layer master batch and the outer layer master batch into the internal mixer respectively, mix and granulate to obtain the inner layer master batch and the outer layer master batch, add the raw materials into the mixer respectively to mix, and compound, extrude and form a multilayer concentric composite parison after the inner layer hopper, the middle layer hopper and the outer layer hopper corresponding to the co-extruder unit structure are melted and plasticized in the machine head, and then form a hollow plastic liner structure by blowing, so that various additives in the composite material system are uniformly dispersed in the polyamide-6 resin to form the hydrogen storage bottle plastic liner with excellent dimensional stability, high air tightness, high antistatic property and high oxidation resistance.
The plastic liner of the fiber-wrapped hydrogen storage cylinder and the method for forming the same according to the present invention will be described in further detail with reference to the following examples.
Example 1
The embodiment of the application provides a fiber fully-wound hydrogen storage bottle plastic liner, which comprises an inner layer, a middle layer and an outer layer which are sequentially arranged from inside to outside; wherein the inner layer consists of 80 percent of polyamide-6 and 20 percent of inner layer master batch in percentage by mass; the inner layer master batch is prepared from the following raw materials in percentage by mass: 88% of polyamide-6, 5% of blocking agent, 3% of antistatic agent, 1% of antioxidant and 3% of dispersant; the middle layer is made of ethylene-vinyl alcohol copolymer; the outer layer consists of 80 percent of polyamide-6 and 20 percent of outer layer master batch in percentage by mass; the outer layer master batch is prepared from the following raw materials in percentage by mass: 79 percent of polyamide-6, 5 percent of blocking agent, 3 percent of antistatic agent, 1 percent of antioxidant, 3 percent of dispersant, 3 percent of light stabilizer and 6 percent of coupling agent. Wherein the manufacturer of the polyamide-6 is Dusmann, Netherlands, and the model is Fuel Lock FL-LP; the manufacturer of the blocking agent is Japan synergetics, and the model is modified hydrotalcite magceler-1; the manufacturer of the antistatic agent is Switzerland Kelain, and the model is the antistatic agent SAS 93; the antioxidant is produced by Pasfu Germany with the model of IRGANOX 215; the manufacturer of the dispersant is Laine, Switzerland, the model is polyamide Licowax C wax; the light stabilizer manufacturer is Laien, Switzerland, and the model is Nylostob S-EEDpowder; the coupling agent manufacturer is German Pasf, and the type is maleic anhydride macromolecular coupling agent; the manufacturer of the intermediate layer is kohly, model F101.
The forming method of the fiber fully-wound hydrogen storage bottle plastic liner comprises the following steps: respectively adding the raw materials of the inner layer master batch and the raw materials of the outer layer master batch into an internal mixer for mixing and conveying to a double-screw granulation device to respectively prepare the inner layer master batch and the outer layer master batch;
respectively adding the inner layer master batch, the corresponding polyamide-6, the ethylene-vinyl alcohol copolymer, the outer layer master batch and the corresponding polyamide-6 into a mixer for mixing for 15min, and compounding, extruding and forming a multilayer concentric composite parison after the inner layer hopper, the middle layer hopper and the outer layer hopper which correspond to a co-extruder unit structure are melted and plasticized in a machine head, and then forming a hollow plastic inner container structure through inflation, wherein when the hollow plastic inner container structure is formed through inflation, the inflation ratio is 4, and the layer ratio is 3: 5: 5.
example 2
The embodiment of the application provides a fiber fully-wound hydrogen storage bottle plastic liner, which comprises an inner layer, a middle layer and an outer layer which are sequentially arranged from inside to outside; wherein, the inner layer consists of 82 percent of polyamide-6 and 18 percent of inner layer master batch in percentage by mass; the inner layer master batch is prepared from the following raw materials in percentage by mass: 90 percent of polyamide-6, 4 percent of blocking agent, 2.5 percent of antistatic agent, 0.7 percent of antioxidant and 2.8 percent of dispersant; the middle layer is made of ethylene-vinyl alcohol copolymer; the outer layer consists of 85 percent of polyamide-6 and 15 percent of outer layer master batch in percentage by mass; the outer layer master batch is prepared from the following raw materials in percentage by mass: 82.4 percent of polyamide-6, 4 percent of blocking agent, 2.5 percent of antistatic agent, 0.8 percent of antioxidant, 2.8 percent of dispersant, 2.5 percent of light stabilizer and 5 percent of coupling agent. Wherein the manufacturer of the polyamide-6 is Dusmann, Netherlands, and the model is Fuel Lock FL-LP; the manufacturer of the blocking agent is Japan synergetics, and the model is modified hydrotalcite magceler-1; the manufacturer of the antistatic agent is Switzerland Kelain, and the model is the antistatic agent SAS 93; the antioxidant is produced by Pasfu Germany with the model of IRGANOX 215; the manufacturer of the dispersant is Laine, Switzerland, the model is polyamide Licowax C wax; the light stabilizer manufacturer is Laien, Switzerland, and the model is Nylostob S-EEDpowder; the coupling agent manufacturer is German Pasf, and the type is maleic anhydride macromolecular coupling agent; the manufacturer of the intermediate layer is kohly, model F101.
The forming method of the fiber fully-wound hydrogen storage bottle plastic liner comprises the following steps: respectively adding the raw materials of the inner layer master batch and the raw materials of the outer layer master batch into an internal mixer for mixing and conveying to a double-screw granulation device to respectively prepare the inner layer master batch and the outer layer master batch;
respectively adding the inner layer master batch, the corresponding polyamide-6, the ethylene-vinyl alcohol copolymer, the outer layer master batch and the corresponding polyamide-6 into a mixer for mixing for 18min, and compounding, extruding and forming a multilayer concentric composite parison after the inner layer hopper, the middle layer hopper and the outer layer hopper which correspond to the structure of a co-extruder unit are melted and plasticized in a machine head, and then forming a hollow plastic inner container structure through inflation, wherein when the hollow plastic inner container structure is formed through inflation, the inflation ratio is 5, and the layer ratio is 3: 5: 5.
the embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Claims (10)

1. A fiber fully-wound hydrogen storage bottle plastic liner is characterized by comprising an inner layer, a middle layer and an outer layer which are sequentially arranged from inside to outside;
wherein the inner layer consists of 80-90% of polyamide-6 and 10-20% of inner layer master batch in percentage by mass; the inner layer master batch is prepared from the following raw materials in percentage by mass: 88-94% of polyamide-6, 2.5-5% of a blocking agent, 1.5-3% of an antistatic agent, 0.5-1% of an antioxidant and 1.5-3% of a dispersant;
the intermediate layer is made of ethylene-vinyl alcohol copolymer;
the outer layer consists of 80-90% of polyamide-6 and 10-20% of outer layer master batch in percentage by mass; the outer layer master batch is prepared from the following raw materials in percentage by mass: 79-89.5% of polyamide-6, 2.5-5% of blocking agent, 1.5-3% of antistatic agent, 0.5-1% of antioxidant, 1.5-3% of dispersing agent, 1.5-3% of light stabilizer and 3-6% of coupling agent.
2. The plastic liner of a fiber-wrapped hydrogen storage bottle according to claim 1, wherein the blocking agent is modified hydrotalcite.
3. The plastic liner of fiber-wrapped hydrogen storage bottle according to claim 1, wherein the antistatic agent is a compound of an amine adduct of ethylene oxide.
4. The plastic liner for fiber-wrapped hydrogen storage bottles of claim 1, wherein said antioxidant is a mixture of pentaerythrityl tetrakis [ β - (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ] and phosphite.
5. The plastic liner of a fiber-wrapped hydrogen storage bottle according to claim 1, wherein the dispersant is a polyamide wax.
6. The plastic liner for fiber-wrapped hydrogen storage bottles of claim 1, wherein the light stabilizer is N, N-bis (2, 2, 6, 6-tetramethyl-4-piperidyl) -1, 3-benzenedicarboxamide.
7. The plastic liner of a fiber-wrapped hydrogen storage bottle according to claim 1, wherein the coupling agent is a maleic anhydride-based polymer coupling agent.
8. The method for forming a plastic liner of a fiber-wrapped hydrogen storage bottle according to claim 1, comprising the steps of:
respectively adding the raw materials of the inner layer master batch and the raw materials of the outer layer master batch into an internal mixer for mixing according to the mass percentage, and conveying the mixture to a double-screw granulation device to respectively prepare the inner layer master batch and the outer layer master batch;
according to the mass percentage, the inner layer master batch, the corresponding polyamide-6, the ethylene-vinyl alcohol copolymer, the outer layer master batch and the corresponding polyamide-6 are respectively added into a mixer for mixing, and an inner layer hopper, a middle layer hopper and an outer layer hopper corresponding to the structure of a co-extruder unit are fused and plasticized in a machine head, then are compounded and extruded to form a multi-layer concentric composite parison, and then are blown to form a hollow plastic inner container structure.
9. The method for forming the plastic liner of the fully-wound fiber hydrogen storage bottle according to claim 8, wherein the mixing time in the mixer is 10-20 min.
10. The method for forming the plastic liner of the fully fiber-wrapped hydrogen storage bottle according to claim 8, wherein when the hollow plastic liner structure is formed by blowing, the blowing ratio is 2.5-6, the layer ratio is 3: 5: 5.
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